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nl function mortise lock
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Question
Answer
What parts are needed to convert functions on a 8500 mortise lock body?
Resolution:
See Step 3 of the mortise lock reversing instructions(D-4010) which shows function conversions and what part(s) are needed if any are needed.:
Explain the MA581 function
Resolution:
MA581 operation: Latchbolt operated by key from outside or by operating inside knob/lever. Outside knob/lever is always inoperative. Auxiliary latch deadlocks latchbolt when door is locked.:
How do I change the function of the Von Duprin 7500 mortise lock from Lever ( classroom ) to NL ( night latch )?
Resolution:
To convert the Von Duprin 9975L to 9975NL exit function follow these steps (Note: the mortise lock is shipped as Night Latch from the factory): Turn the NL screw on 7500 mortise lock counter clo...:
How can the Von Duprin 98/9975-L with 996L classroom trim function be converted as a night latch function in field?
Resolution:
The following steps are required to convert the Von Duprin 98/9975L from classroom to night latch function: Order new 996L-NL-M trim and reset NL drive screw in mortise lockbody as se...:
Does Von Duprin supply the 9875, 9975, 9875-F and 9975-F mortise exit devices with NL-OP trim function?
Resolution:
For night latch function with pull by others, the 98/99 series mortise exit device should be ordered as NL less trim, e.g., 9875NL-L/TRIM. We will furnish a device only, and the mortise cyl...:
What is the difference between Night Latch (NL) and Class Room function?
Resolution:
Night Latch (NL)= key retracts the latch momentarily to allow entry. When key is removed, the latch will extend and locks the door (momentary unlock). Class Room (Lock/ Unlock)= key unlocks...:
Why is the key locking and/or unlocking my E996L for a 9875?
Resolution:
The 7500 mortise lock should be configured for NL function as shipped not as Classroom. See figure 4-3 in E996L instructions.:
What is the L9080 function?
Resolution:
L9080 is a mortise Storeroom Lock Latchbolt retracted by key outside or by knob/lever inside. Outside knob/lever is always inoperative. Auxiliary latch deadlocks latchbolt when door is clo...:
Does Falcon have a breakaway lever trim feature on mortise locks?
Resolution:
The MA lock does not have Vandlgard or a breakaway trim feature, however, the lever spindle on the MA lock will shear if too much force is applied in order to prevent internal lock damage and resis...: